Home / 20,377.24-28,126.47-13,206.91

Finding the Fourth Proportional to 20,377.24, 28,126.47 and 13,206.91

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Solution

The fourth proportional to 20,377.24, 28,126.47 and 13,206.91 is: 18,229.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.24 : 28,126.47 = 13,206.91 : x
  2. Step 2: Convert to fraction form
    20,377.24/28,126.47 = 13,206.91/x
  3. Step 3: Cross multiply
    20,377.24x = 28,126.47 × 13,206.91
  4. Step 4: Simplify right side
    20,377.24x = 371,463,757.91
  5. Step 5: Solve for x
    x = 371,463,757.91/20,377.24
  6. Step 6: Final answer
    x = 18,229.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.